About the 2027 Thames Twilight 10 Walk
Experience London like never before on the Twilight 10 Walk!
As darkness falls and the Moon rises, set off on a 10km or 10 mile route through the city’s iconic landmarks - from St Paul’s to Tower Bridge and the London Eye.
How to get started
- Choose a distance that suits you: From 10km to an epic 10 miles - you can take on this challenge at your own pace.
- Pick a fundraising option: You'll need to reach a minimum fundraising target based on what you choose.
- Sign up on the Ultra Challenge website: By taking part in support of CALM you’ll get 50% off your reg fee.
How we'll support you
Whether it’s your first time taking on the Thames Bridges Trek or you’re back for more, we’re here to make sure you have the best time. As part of Team CALM you’ll receive:
A CALM t-shirt or vest so you look the part on the day
Dedicated support from the Challenge Events team
Access to the CALM Walking Club Facebook group
Tips and advice to help you smash your fundraising target
Event Accessibility
Visually impaired participants are welcome to take part. To discuss your accessibility needs, get in touch with the Action Challenge team who will be happy to help.
Got a question?
Check out our FAQs or head to the Thames Moonlight 10 Walk website. If you can’t find an answer there, get in touch and we’ll be happy to help.
About the Ultra Challenge Series
The Ultra Challenge Series brings together over 20 epic trek and trail challenges across the UK. Choose to walk, jog or run from 10km or the way up to 100km. Every route is fully marked and packed with rest stops, hot meals, medical support, and customisable camping and transfer packages.
As official Series Partners, you’ll get 50% off your charity place registration fee when you step up for Team CALM.
